Albatross and Dragon Claw have no class defined

[Jetz72]

[Albatross][DRG_071t][55437]
[1 Mana, 1/1 Minion (Beast)]
# Tags: [HEALTH=1, ATK=1, COST=1, CARD_SET=1347, CARDRACE=20, CARDTYPE=4]

[Dragon Claw][DRG_238ht][55819]
[5 Mana, 5/2 Weapon]
# Tags: [ATK=5, COST=5, CARD_SET=1347, DURABILITY=2, CARDTYPE=7]

Normal neutral cards have the Class tag set to 12.

Can cause issues in game with cards that care about class: https://www.reddit.com/r/hearthstone/comments/e9o0gw/so_an_albatross_counts_as_a_card_from_another/

[Jetz72]

Appears fixed for Albatross, but not for Dragon Claw.